Chevrolet Tin Sign

1921 - GM decides to proceed with commercial application of Kettering's 'copper-cooled' engine, intended to replace the traditional piston engine. The initial target is to put the copper-cooled engine in all of Chevrolet Division's cars. The program is officially ended 1923 - with a total of fewer than 800 copper-cooled engines ever being produced and only 300 sold to dealers, all of which are recalled by GM.

- History of Chevrolet

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